HEADS UP: SUJ Going in to head today

Garrett Cooper yanefbsd at gmail.com
Wed Apr 21 13:06:10 UTC 2010

On Wed, Apr 21, 2010 at 12:39 AM, Gary Jennejohn
<gary.jennejohn at freenet.de> wrote:
> On Tue, 20 Apr 2010 12:15:48 -1000 (HST)
> Jeff Roberson <jroberson at jroberson.net> wrote:
>> Hi Folks,
>> You may have seen my other Soft-updates journaling (SUJ) announcements.
>> If not, it is a journaling system that works cooperatively with
>> soft-updates to eliminate the full background filesystem check after an
>> unclean shutdown.  SUJ may be enabled with tunefs -j enable and disabled
>> with tunefs -j disable on an unmounted filesystem.  It is backwards
>> compatible with soft-updates with no journal.
>> I'm going to do another round of tests and buildworld this afternoon to
>> verify the diff and then I'm committing to head.  This is a very large
>> feature and fundamentally changes softupdates.  Although it has been
>> extensively tested by many there may be unforseen problems.  If you run
>> into an issue that you think may be suj please email me directly as well
>> as posting on current as I sometimes miss list email and this will ensure
>> the quickest response.
> And the crowd goes wild.
> SUJ is _great_ and I'm glad to see it finally making it into the tree.

    Indeed. I'm looking forward to testing the junk out of this --
this is definitely a good move forward with UFS2 :]...

PS How does this interact with geom with journaling BTW? Has this been
tested performance wise (I know it doesn't make logistical sense, but
it does kind of seem to null and void the importance of geom with
journaling, maybe...)?

More information about the freebsd-current mailing list